from pathlib import Path
import sqlite3

from jarca_ledger_mcp.db import init_db
from jarca_ledger_mcp.application.monthly_settlement_service import (
    list_monthly_settlement_history,
    get_monthly_settlement_history_record,
)


def _seed_history(path: str) -> None:
    init_db(path)
    with sqlite3.connect(path) as conn:
        conn.execute(
            """INSERT INTO asset_snapshot_runs
               (id,basis_date,close_status,draft_version,approved_at,correction_of_run_id,
                correction_reason,created_at,settlement_month,income_total,expense_total,
                net_cashflow,net_worth)
               VALUES ('run-1','2026-09-30','complete_exact',3,'2026-10-01','','',
                       '2026-10-01','2026-09',100,40,60,1000)"""
        )
        conn.execute(
            """INSERT INTO asset_snapshot_runs
               (id,basis_date,close_status,draft_version,approved_at,correction_of_run_id,
                correction_reason,created_at,settlement_month,income_total,expense_total,
                net_cashflow,net_worth)
               VALUES ('run-2','2026-09-30','conditional',4,'2026-10-02','run-1','fix',
                       '2026-10-02','2026-09',100,45,55,995)"""
        )


def test_monthly_history_lists_close_and_correction_records(tmp_path: Path):
    path = str(tmp_path / "history.sqlite3")
    _seed_history(path)

    result = list_monthly_settlement_history("2026-09", db_path=path)

    assert result["success"] is True
    assert [row["run_id"] for row in result["history"]] == ["run-2", "run-1"]
    assert result["history"][0]["correction_target"] == "run-1"
    assert result["read_only"] is True


def test_monthly_history_record_reads_exact_run(tmp_path: Path):
    path = str(tmp_path / "history-read.sqlite3")
    _seed_history(path)

    result = get_monthly_settlement_history_record("run-1", db_path=path)

    assert result["success"] is True
    assert result["history"]["run_id"] == "run-1"
    assert result["history"]["net_cashflow"] == 60
    assert result["history"]["net_worth"] == 1000


def test_monthly_history_record_reports_missing_run(tmp_path: Path):
    path = str(tmp_path / "history-missing.sqlite3")
    init_db(path)

    result = get_monthly_settlement_history_record("missing", db_path=path)

    assert result["success"] is False
    assert result["error_code"] == "not_found"